Running into the same issue. Found the resource at https://www.brandonkraft.com/uploads/enews-aweber-draft.pdf to be helpful.
But this plugin is very complicated to setup.
Here is the error I get when I follow your instructions. Any help would be greatly appreciated. https://mattmcvicker.com/wp-content/uploads/2013/03/aweber-error.png
I copied the previous code you had listed above as well and still no dice!!
Heres the code minus my details
https://screencast.com/t/KSmriScKSUL
<input type=”hidden” name=”meta_web_form_id” value=”—” />
<input type=”hidden” name=”meta_split_id” value=”” />
<input type=”hidden” name=”listname” value=”—” />
<input type=”hidden” name=”redirect” value=”https://www.aweber.com/thankyou-coi.htm?m=text” id=”—–” />
<input type=”hidden” name=”meta_adtracking” value=”My_Web_Form” />
<input type=”hidden” name=”meta_message” value=”1″ />
<input type=”hidden” name=”meta_required” value=”email” />
<input type=”hidden” name=”meta_tooltip” value=”” />